Eth Zurich

Christian Dönitz

Christopher Harald Onder

Lino Guzzella

Yann Chamaillard

Christoph Voser

Julian Vasile

Pascal Higelin

Alain Charlet

The present invention relates to a turbocharged reciprocating piston engine, and to a method for operating said engine. The combustion chamber includes at least one inlet valve (), one outlet valve () and at least one additional charging valve (), for the additional feed of compressed air to bridge the turbo lag, that are each operatively connected to the crankshaft via a camshaft and the operative connection of the charging valves to the crankshaft can be deactivated, with the result that the at least one charging valve () remains closed. An approximately stoichiometric combustion mixture is achieved by a turbocharger () and a throttle valve (). By displacement of the opening instant of the charging valves (), air can be pumped from the cylindrical combustion chambers into the compressed air tank (). An additional compressor () can likewise deliver air into the compressed air tank ().

Turbocharged reciprocating piston engine having a connected pressure tank for bridging turbo lag, and method for operating said engine

The present disclosure relates to an pneumatic hybrid internal combustion engine with at least one combustion chamber composed of a cylinder in which a piston is arranged mechanically interconnected to a crank shaft via a piston rod. An inlet valve and an exhaust valve are both mechanically interconnected via a valve gear to the crank shaft. The engine further includes at least one charge valve which is actuated by a charge valve actuator in a fully variable manner such that the engine can be operated in a four stroke hybrid mode.

Pneumatic hybrid internal combustion engine on the basis of fixed camshafts

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Markdorf, Germany

Christian Dönitz